39 lines
917 B
Go
39 lines
917 B
Go
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// Copyright 2015 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build !nacl,!plan9,!windows
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package net
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// forceGoDNS forces the resolver configuration to use the pure Go resolver
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// and returns a fixup function to restore the old settings.
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func forceGoDNS() func() {
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c := systemConf()
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oldGo := c.netGo
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oldCgo := c.netCgo
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fixup := func() {
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c.netGo = oldGo
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c.netCgo = oldCgo
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}
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c.netGo = true
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c.netCgo = false
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return fixup
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}
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// forceCgoDNS forces the resolver configuration to use the cgo resolver
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// and returns a fixup function to restore the old settings.
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// (On non-Unix systems forceCgoDNS returns nil.)
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func forceCgoDNS() func() {
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c := systemConf()
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oldGo := c.netGo
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oldCgo := c.netCgo
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fixup := func() {
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c.netGo = oldGo
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c.netCgo = oldCgo
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}
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c.netGo = false
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c.netCgo = true
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return fixup
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}
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